02 firebird runs rich
09-22-2009, 05:19 PM
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02 firebird runs rich i have a 2002 firebird Ls1 heads, intake, injectors, headers, converted to Ls6.......runs rich and spark plugs are fouled...changed plugs runs better when you go down the highway all cylinders have random misfires the pcv holder was full cleaned it out, changed fuel filter, checked for vacuum leaks, MAF sensor reading 10.5 g/s at idle and MAP 60kpa anyone have ideas
09-22-2009, 11:22 PM
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i don't own the car. i'm just trying to fix it. what do you mean by has it been tuned? can it lose the tuning in the PCM? it has the stock PCM from what i can see.
Last edited by 91camarojj; 09-23-2009 at 08:48 AM.
09-23-2009, 02:38 PM
#6
Any idea who tuned it?? If its got a bad tune, that can cause it to run rich or misfire.
Also, what kind of plugs are you running?? Make sure they are the stock heat range AC Delco or NGK's, colder plugs or other brands (Bosch
) can make it misfire or foul plugs.
Also, what kind of plugs are you running?? Make sure they are the stock heat range AC Delco or NGK's, colder plugs or other brands (Bosch
) can make it misfire or foul plugs.